| 摘要 |
PROBLEM TO BE SOLVED: To prevent exhaust gas to be fed out to an internal combustion engine from leaking to the outside of a system.SOLUTION: A denitrification device 10 is equipped with an exhaust turbine 18 rotation-driven by exhaust gas discharged by a Diesel engine 12, a compressor 20 compressing air and EGR gas sucked from a suction port by rotation-driving the exhaust turbine 18, and feeding out that to the Diesel engine 12, a return gas casing 24 for mixing the air and the EGR gas and leading that to the suction port, a silencer 26 connected to the return gas casing 24 and leading the air to the return gas casing 24, and an EGR blower 16 for feeding out a part of the exhaust gas to the return gas casing 24 as the EGR gas. A control device 40 for the denitrification device measures the pressure of gas led to the compressor 20, and controls the number of rotations of the EGR blower 16 so as to make a pressure measurement value become less than atmospheric pressure. |
